摘要:
David has a white board with 2×N2 \times N2×N grids.He decides to paint some grids black with his brush.He always starts at the top left corner and en 阅读全文
posted @ 2019-04-22 20:08
明霞
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摘要:
Give a string SSS and NNN string TiT_iTi , determine whether TiT_iTi is a subsequence of SSS. If ti is subsequence of SSS, print YES,else print NO. 阅读全文
posted @ 2019-04-22 19:47
明霞
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